View Compilation Error

0_0_25009080_11203.cpp: In function 'int main()':
0_0_25009080_11203.cpp:15:26: error: 'scanf' was not declared in this scope
     int T; scanf("%d", &T);
                          ^
0_0_25009080_11203.cpp:16:9: error: 't' was not declared in this scope
     FOE(t, 1, T){
         ^
0_0_25009080_11203.cpp:16:16: error: 'FOE' was not declared in this scope
     FOE(t, 1, T){
                ^